Getting Started 
Once you have installed the SAP Web Application Server you can start to create your own applications. You will find instructions under:
· Creating Your First Web Dynpro Application
· Accessing SAP Data Using Web Dynpro
· Creating Your First J2EE Application
If you want to find out more about J2EE functions of the SAP Web Application Server, see the summary in J2EE Technology.
Overview of the Documentation Manuals
Installation Manual
The installation manual is provided only on the SAP Service Marketplace for downloading and is not part of the SAP Library. For more information about downloading the Installation Manual from the SAP Service Marketplace, see Installation Information.
Architecture Manual
In the Architecture Manual first the J2EE cluster architecture of the SAP Web AS, central services, load balancing, and high availability are described. Then follows an explanation of the system architecture of the SAP J2EE Engine. A further section explains how the SAP NetWeaver Developer Studio - the SAP development infrastructure for Java - is structured and describes the integration of the SAP NetWeaver Developer Studio into the entire SAP development infrastructure.
The Administration Manual contains all the administration information for the SAP J2EE Engine. The main topics are configuration and administration, and monitoring and performance. Other important topics are security of the J2EE Engine and the description of the server infrastructure. The manual is supplemented with tips about handling errors.
Development Manual
This manual covers the Java development environment - the SAP Netweaver Developer Studio – and explains how to design Web-based user interfaces and business objects using the SAP NetWeaver Developer Studio. The section Advanced Programming provides you with an extensive introduction to the Java programming environment and explains the areas, deployment, sessions, services and interfaces.
Reference Manual
This manual contains descriptions of the configuration parameters of the J2EE Engine, the J2EE Engine shell commands and the SAP J2EE Engine deployment descriptors.
Migration Manual
This manual contains all the information you need to migrate an application created in SAP Web Application Server 6.20.